Product Details

Rebuild kit for the GM 8L90 automatic transmission

Fits: GM, Cadillac, Chevrolet, GMC

8L90, 8L90E, 8 speed automatic

2015-up

This master overhaul transmission kit comes with the following rebuild parts:

• Full Transtec overhaul gasket set
• Complete set of friction clutch plates
• Internal high flow fluid filter

The Transtec gasket set included in this overhaul banner box kit is the highest quality available. The set includes every rubber seal, paper gasket, O-ring, sealing rings, and metal clad seals that you will need to complete your rebuild. The Transtec gasket sets are considered a premium kit, the reusable molded rubber pan gasket, and higher quality gaskets and seals throughout.

Additionally, you can add the following upgrades to this rebuild banner box kit:

• Steel plates
• ATSG Techtran rebuild manual
• Transgo Shift Kit
• Assembly Grease - Lubegard, Life Smart Blend, or Transjel
• Platinum Lubegard - Insider tip: Many shops use this synthetic supplement in every freshly rebuilt transmission to keep them on the road past the warranty.

Remember to soak all of your clutches in transmission fluid for thirty minutes before you install them.

These transmissions can be found in the following vehicles; however, you should double check your application.  It is common for similar vehicles to have multiple transmission options available from the factory.

Cadillac

• Escalade, EXT, ESV

Chevrolet

• Camaro
• Colorado 5.3L
• Corvette
• Express Van 2500
• Silverado Truck 1500, 2500
• Suburban
• Tahoe

GMC

• Canyon 5.3L
• Savana Van 2500
• Sierra Truck 1500, 2500
• Yukon
• Yukon XL 1500
• Yukon Denali

These transmissions are part of the Turbo Hydramatic or Hydra-Matic series and also known by the following codes and part numbers: 8L90, 8L90E.

This transmission master rebuild kit fits the following years: 2015, 2016, 2017, 2018, 2019, 2020, 2021, 2022.